Answer:
the normal human body temperature in Celcius is 37°C, in Fahrenheit is 98.6°F, in Kelvin is 310°K
Answer:
(a) Position Vectors V₁= -2î km, V₂=5î km
(b) Displacement Δx=7 km
Explanation:
Given data
Distance=2 km west at t=0
Distance=5 km east at t=6 min
Positive x is the east direction
To find
(a)Car position vector at given times
(b)Displacement between 0 to 6.0 min
Solution
For Part (a) car position vector at given times
At t=0 the distance=2 km west so conclude that x₁=-2 because it is in negative side So vector V₁
V₁= -2î km
At t=6.0 the distance=5 km east so conclude that x₂=5 because it is in positive side So vector V₂
V₂=5î km
For (b) displacement between 0 to 6.0 min
According to following mathematical law we can conclude that
Δx=x₂-x₁
Δx=5-(-2)km
Δx=7 km
Answer:
(a) 
(b) 
Explanation:
Let:
mass of father be, 
mass of son be, 
speed of son be, 
initial speed of father be, 
After speeding up, speed of father is 
<u>We know Kinetic Energy is given as</u>
.....................................(1)
where:
m = mass
v = velocity
Hence, according to the initial condition the father is having kinetic energy half the kinetic energy of the son.



.................................................(2)
According to the final condition:



.....................................................(3)
(a)
From eq. 2 & 3





(b)
<em>putting the above value in eq. (2)</em>

Explanation:
Extrusive rocks may have a few grains that are large enough to see, but most of them will be too small to see individual minerals. ... The individual mineral grains are almost too small to see. Some extrusive rocks cool so quickly that they do not form any grains. Instead, they form a natural glass.